Surface condenser



Patented Aug'. 18, 1925.

UNI-TED STATES PATENT OFFICE..vv

JGHN EKIRGAN, 0F PHILLIPSBURG, NEW JERSEY, ASSIGNOR TO INGERSOLL-RAND COMPANY, 0F J EBSEY CITY, NEW JERSEY, A CORIPORATION OIE?` NEW JERSEY.

SURFACE coNDnNsiER.'

Application led April 6, 1923, Serial No. 630,224. Renewed March 20, 1925.

To all whom, it may concern.:

Be itknown that I, JOHN F. KIRGAN, a citizen of the United States, a resident of Phillipsburg, county of lVarren, and State of New Jersey, have. invented a certain Surface Condenser, of which the following is a specification accompanied by drawings.

This invention relates to surface condensers having cooling elements in the forni of rows of tubes, and the objects 0f the invention are to increase the etliciency of such condensers by causing more steam to pass to the ends of the condensercasing. This l accomplish by reducing the area for the passage of steam between the tubes in one or more rows vand increasing Ithe frictional resistance to the passage of the steam, in a simple and cheap manner, without the use of batlies or increasing the number of tubes' or changing the spacing of the usual tubes in the tube sheets.

The invention is shown in one of its preferred forms in the accompanying drawings, in which Figure 1 is a longitudinal sectional elevation 'of a condenser, and y Figure 2 is a transverse sectional view on the line 2 2 of Figure l, looking in the direction 0f the arrows. Y

Referring to the drawings, Vthe 'condenser comprises the casing A having the steam inlet B and the outlet C for condensate. The casing is' provided with the usual tube sheets D and E in which vrows of straight tubes F, G, H, J and K are shown. The tubes L and in any desired alternate rows as shown are off-set 0r bent, in this instance, upwardly so that portions of" their length lie in substantially the same plane as the straight tubes Gr and H respectively of adjacent rows. The tubes L and O are preferable oif-set or bent for the major portion of their length and are. preferably bent upwardly into substantially the same planes as the' rows of tubes directly above them, so that drainage of theof-set tubes is facilitated. Although the off-set tubes L and O are shown in a region above the mid sec- 4 tion of the condenser, they could be at the top or bottom as desired.

points at which there is greater area forthe passage otsteam and less frictional resistance. .ln this way, the efficiency of the condenser is `increased and a more even distribution of steam thrbughout the condenser asing produced.

I claim:

l.. A surface condenser, comprising a casing and tube sheets, cooling elements in the form of rows of straight tubes heldin i said tube sheets, the tubes in at least one row being olf-setso that portions of their length` lie in substantially the saine plane as an adjacent row of straight tubes, whereby greater frictional resistance is afforded to the passage of the steam and some of the steam is directed towards the ends of the condenser casing.

2. A surface condenser, comprising a casing .and tube sheets, cooling elements in the form of rows of straight tubes held in said tube'sheets, the tubes in a plurality of alternate rows being off-set along the major por-- tions of theirleugth. so that the olf-set portions lie in substantially the saine planes as the straight tubes'of adjacent rows respectively, whereby the area for the passage of steam between the tubes in said combined ro'ws is reduced and the frictional resistance vis increased in order to direct more of the steam towards the ends of the condenser casing. In testimony whereof I have signed this specification.

JOHN F. KIR-GAN. 

